Compare with iron sights, and at the same distances, you can use
red dot sights. The red dot sights will be a lot faster aiming on
target, easier to use at a wider range of lighting conditions with
variety brightness setting. They are for high speed, at close to
medium range, and are particularly superior for engaging a moving
target. This makes them equally desirable fo hunting, self defense,
competition, and law enforcement.

Advantage

A standard design uses a red light-emitting diode at the focus of
collimating optics which generates a dot style illuminated reticle
that stays in alignment with the weapon the sight is attached to
regardless of eye position.